Safety-valve for water-backs.



0. 0. LEMON.

SAFETY VALVE FOR WATER BACKS.

APPLICATION FILED NOV; 10. 1914.

1,149,272. Patented Aug. 10, 1915.

gwuv/wiloz COLUMBIA PLANOGRAPH 60.,WA5HINOTON. D. c.

onnn o; LEMON, or BRISTOL, VIRGINIA.

. 'sAF-ETY-VAINE Hon 'wnrnnnncns.

Application filedNov'ember 10, 51914; Seria1-NoJ87 L352.

ZowfiZZ whom it may concerns:

'. Safety -Valves for Wat r- Backs, of which become too warm.

Be it known that I, TOREN 0. LEMOK,%1 citizen of the United States of America, re-

siding at Bristol, in the :cou-n'ty 0r1Wash-- ington and State of Virginia, have "invented certain new and useful Improvements in the following is a specification, reference .bBHl-g had therein to the accompanying drawing. I

This invention relatesito-sartety valves for water backs in stoves-or ranges 'andihas for its objectthe production pf'asimple and I eiiicien't valve which will allow the escape of water under undue gpressure, asxtor am freeze or should stance if the water should Another object of this invention :is the production of a simple and :eflicient valve which will automatically "operate so as to,

allow *water :to be discharged therefrom without burstingfthe pipes or receptacles in which the Water is contained provided that:

the water should becomeiheated :to 'toogreat a temperature or shouldaex'p and by the water freezing' I g m With these :and other fiObj'GCtS in view this invention consists of certain novel combin'a tions, constructions, and aa rrangements 'of parts as will be hereinafter tully described and-claimed.

In "the accompanying drawings Figure 1 is a vertical section through 'a portion of the stove showing the device applied thereto. Fig. 2 isa bottom lan'niew of the valve. Fig. 3 is a longitudinal section through the valve showing the same passing through the supporting casing. Fig. 4; is a perspective view of the valve rod. Fig. 5 is a section taken on line 5-5, of Fig. 3. 7

By referring to the drawings it will b seen that 1 designates the StOVQxWlliOll is provided with the usual water back 2. A

pipe 3 is threaded into the water-aback 2 and carries a T 4:. The automatic valve which comprises the principal part of-the present invention is placed within the T 4 as'is illustrated in Fig. 3. Theautomatic valve comprises a head 5 which head is eX- ternally threaded and fits in the internally threaded face of the head 4. The head 5 is provided with a projecting neck 7 which is internally threaded at its outer end as indi- ,cated at 8 in which is threaded a hollow plug 9. I p

A valve rod 10 is slidably mounted inthe Patented Aug. it M215.

hollow plug 9, and this valve rodlO carries a collar 11, which collar is engaged by o V coil spring '12, which coil spring also engages-the inner end of the plug 9 for normally anging 2m inward pressure upon the. vailv-el'rod it). The valve rod 10 is provided withiaithrea ded end 1-3 upon which is thread- 1 ed a T-shaped handle 14, the T-shapedhan-,

,dlewbeing locked in engagement with: the valve irod 10 loy means of transversely X tending ;pi 11'f15. r

Asis illustrated clearly in Fig.1 the head 5 is provided'with a centrally -'located bore 1e fas islailso "icle'arl-y illustrated in Figs. and "3. A :sleeve 19 is threadedinto the in ternalglyithreaded end 17 of the head 5, and

thi's -slee've carries anexternally threaded lug .120, whichplug is provided witlian aperture 121 for receiving the flat tongue 22 carried bythe inner end 0f the valve rod 10. The valve rod 10 is provided with ya valve seat engaging bevel portion '23 at its.

inner end and is adapted to fit upon the v-a l've :seat 2 for preventing the escape of Water through the sleeved-9 except when the Water within the water back 2 becomes heal'tecfl be'yond a predetermined degree or expands owing to the fact that the water has trozenor'is treezingtherein.

- Fronrltl-ie foregoing description it will be seen 'that a very simple and e'fiicient automatic w a lve has been produced Which ises pecially adapted to be used in connection with cook 'stoves and the like, and it should *beimderstood that any changes in the detail construction may be employed without de parting from the spirit of the invention.

It should be understood further that when the water within the water back 2 rises above a predetermined degree of temperature, the valve'rod 10 will be pushed outwardly, thereby allowing the escape of warm water or steam out through the aperture or port 18. On the other hand, if the water expands to too great an extent, which, of course, will increase the pressure within the water back, the rod 10 will be pushed outwardly and the cold water may also escape out through the port 18, and in this manner prevent the bursting of the pipes It should be further understood that proriding water should freeze within the plug E20; orin the. aperture 21, thereof, the ice can be readily removed therefrom twisting the rod owing to the fact thatthe tongue 22 will in this manner readily'andeasily v be easily placed' for accomplishing the declean'out the aperture 21, therebyallowing the free operation 01"? the valve rod 10, as soon as the fire is rebuilt in the stove and the 'WRtQl is'again brought to its normal ternperature. r e v v 1t,"of' course, should be understood that water is not intended to be admitted into the sleere 19 except, whenthe'rod 10 isforced inwardly, and that water containedv within the water back will circulate,around-the sleeve .19 as willbe clearly. understood by carefully considering Figs. 1 and h I The: valve can be kepta'clean and in work incorder and turning the handle 14 every few weeks and "in extremecold Weather, it is possible: to: determine before 7 starting the firewhether or not the system is frozen by turningthe handleand pull ing the same outwardly; lfthe water flows ,freely,.this'will show that theIpipes are not i'rozen. i If v the valve; is free and works easily and the water will not run v this will. -:showthat the pipes "areiroman,v but that .the f water back is not; 4, ltyofcourse, should be eunderstood that it would be. impossible to a biirst-the water bac kno matter how hard the f water may have been froze njfor the reason- .that the pressure cannot be fraiseduntil the ice has' thawed. J

f As clearly illustrated Fig. lythe rdi.

nary boiler -may be employed in-conne'ction with the present device, which-boiler may be placed in communication with the. V Water back by means of the usual communi- 40 r ca ting pipes 26 and 27.

It,fof course, should be understood that is not necessary that the tank should be-locoated any certain. or particular distance,

1 1170111 the stove in order tobe protected by Go'pies of thispatent may be obtained for the safety valve It should not be necessary to change any part of the Water system now tern, it should be understood that the presentv device maybe a'pplied to any water system in combination with a range or other heating device without considerable expense.

Having thus described the invention what is' claimed as new is:,-

In a device of the class described the riedlthereby, a T carriedbysaidpipe, a

head carried bysaid T, a sleeve carr d d a tplug carried by onevend. f aid sleeve, said plug provided with a circular OPening a-Spring pressed plunger rodwork ing through said sleeve andhead and prof venting the passage sleeve and head.

2. In a deviceof the class described the combination with a wateribacky'a support a head carried by saidsupport, saidfhead pro"- vided with a sleeve; a threaded plug carriedby the inner end: of saidsleeve, a

acombination with a-Water back a pipe car threaded plug carriedby said head, a spring pressed plunger engaging said first men- ":ti'onedplug' and normally preventing the passage of water through 'said sleeve and plug- Intestimony whereof I hereunto affi x my signaturev n presence of two witnesses,

. Q EN Q-wM witnessesz. V

' G. 'LAVINDER, i O. A. BUTLER. V

five cents each,- by addressing the 9 Commissioner of ntents, Washington, D. C. V a 

